薄壁小弯曲半径钛合金管材弯曲技术研究  

Study on Bend Forming Process for Titanium Alloy Tube With Thin-Walled and Small Radius

作　　者：李鹏亮[1] 孙宾[1] 张志[1] 李云飞[2] 

机构地区：[1]中航工业北京航空制造工程研究所 [2]中国人民解放军驻沈阳飞机工业(集团)有限公司军事代表室

出　　处：《航空制造技术》2013年第16期113-115,共3页Aeronautical Manufacturing Technology

摘　　要：钛合金管材弯曲成形是一项复杂的型材成形技术,尤其是薄壁小弯曲半径管材,内弧起皱和外弧拉裂、减薄等成形缺陷很难克服。针对某型发动机钛合金薄壁管件的特点,采用推弯成形工艺,并通过试验获得了满足设计要求的零件。结果表明,推弯成形工艺很好解决了钛合金薄壁小弯曲半径管材外弧减薄、断裂等问题,成形零件精度高,表面质量好。The bending process of titanium alloy tube is a quite complex technology. According to the tube with thin-walled and small radius, it is difficult to avoid the defects which include inner-wall wrinkling, outer-wall tensile crack and wall thinning. On the basis of the titanium alloy thin-walled tube of the aeroengine, the push-bending technology is proposed and the part is manu- facted successfully through engineer test. The results prove that push-bending technology can solve the problem such as inner-wall wrinkling, outer-wall tensile crack of tita- nium alloy tube with the features of thin-walled and small radius. The part has good surface quality.

关 键 词：薄壁 小弯曲半径 钛合金管材 推弯成形 

分 类 号：TG306[金属学及工艺—金属压力加工]